DR Power Sprint (1985 - 2000) - Manual (Page 35)

DR
®
TRIMMER/MOWER
™
Assembly & Operating Instructions 29
Engine lacks power or is not running smoothly
(continued)
(Please refer to the Engine Manufacturer's Owner's
Manual for engine-specific procedures.)
Þ Is the air filter clean? If it’s dirty, change it
following the procedure in the Engine
Manufacturer's Owner's Manual.
Þ Is the throttle cable attached to the engine and
moving freely?
Þ Are the blower housing, throttle linkage and
cooling fins free of debris? Clean them following
the instructions in the engine manufacturer's
owner's manual.
Þ Are the bearing housing and trimmer head
clogged with debris? Drop them and clean
according to the To Partially Lower the Bearing
Housing Assembly instructions in the
maintenance section of this manual.
Þ If your engine still lacks power, call 1(800)DR-
OWNER(376-9637) for advice and assistance.
Grass is wrapping on trimmer shaft, bearing housing
and/or trimmer head Þ Lift the Mow-Ball ™
Support slightly off the ground
by pushing down on the handlebar and back the
machine up. This should help clear the debris.
You can also turn the engine off, disconnect the
spark plug and pull out any remaining material
with your hands, or use a knife to cut it away.
Þ Are you trying to do too much too fast? Check
the tips in the section on breaking cutting cords
below.
Þ Any time you have to pull or cut away wrapped
vegetation, turn off the DR
®
and disconnect
the spark plug wire.
Trimmer head won't spin Þ Is the trimmer head control fully engaged? Pull
the trimmer head control bar all the way back to
the handlebars, then firmly push the trimmer
head control lever all the way down until you hear
a click. When you release it, it will spring part
way back. The head will keep spinning as long
as you hold back the trimmer head control bar.
Þ Is your v-belt properly aligned? Check it against
the diagram in the Belt section of this manual.
Make sure the belt is inside the idler pulley, that
the spring on the idler pulley arm is in place.
Þ Is your v-belt worn or frayed? If so, replace it.
Þ Are your bearings in good shape? Follow the To
Check the Bearing Housing Assembly
instructions in the maintenance section of this
manual.
Þ Are the bearing housing and trimmer head
clogged with debris? Drop them and clean
according to the To Partially Lower the Bearing
Housing Assembly instructions in the
maintenance section of this manual.